Function ReactFiberHydrationContext

code/styling/public/app.js:11970–12263

(config)

};

var ReactFiberHydrationContext = function (config) {
  var shouldSetTextContent = config.shouldSetTextContent,
      hydration = config.hydration;

  // If this doesn't have hydration mode.

  if (!hydration) {
    return {
      enterHydrationState: function () {
        return false;
      },
      resetHydrationState: function () {},
      tryToClaimNextHydratableInstance: function () {},
      prepareToHydrateHostInstance: function () {
        invariant(false, 'Expected prepareToHydrateHostInstance() to never be called. This error is likely caused by a bug in React. Please file an issue.');
      },
      prepareToHydrateHostTextInstance: function () {
        invariant(false, 'Expected prepareToHydrateHostTextInstance() to never be called. This error is likely caused by a bug in React. Please file an issue.');
      },
      popHydrationState: function (fiber) {
        return false;
      }
    };
  }

  var canHydrateInstance = hydration.canHydrateInstance,
      canHydrateTextInstance = hydration.canHydrateTextInstance,
      getNextHydratableSibling = hydration.getNextHydratableSibling,
      getFirstHydratableChild = hydration.getFirstHydratableChild,
      hydrateInstance = hydration.hydrateInstance,
      hydrateTextInstance = hydration.hydrateTextInstance,
      didNotMatchHydratedContainerTextInstance = hydration.didNotMatchHydratedContainerTextInstance,
      didNotMatchHydratedTextInstance = hydration.didNotMatchHydratedTextInstance,
      didNotHydrateContainerInstance = hydration.didNotHydrateContainerInstance,
      didNotHydrateInstance = hydration.didNotHydrateInstance,
      didNotFindHydratableContainerInstance = hydration.didNotFindHydratableContainerInstance,
      didNotFindHydratableContainerTextInstance = hydration.didNotFindHydratableContainerTextInstance,
      didNotFindHydratableInstance = hydration.didNotFindHydratableInstance,
      didNotFindHydratableTextInstance = hydration.didNotFindHydratableTextInstance;

  // The deepest Fiber on the stack involved in a hydration context.
  // This may have been an insertion or a hydration.

  var hydrationParentFiber = null;
  var nextHydratableInstance = null;
  var isHydrating = false;

  function enterHydrationState(fiber) {
    var parentInstance = fiber.stateNode.containerInfo;
    nextHydratableInstance = getFirstHydratableChild(parentInstance);
    hydrationParentFiber = fiber;
    isHydrating = true;
    return true;
  }

  function deleteHydratableInstance(returnFiber, instance) {
    {
      switch (returnFiber.tag) {